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8289511: Improve test coverage for XPath Axes: child
Reviewed-by: aph, andrew Backport-of: cfe9026fe0506488cc0f0557299cfa585811d194
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test/jaxp/javax/xml/jaxp/unittest/xpath/XPathExpChildTest.java
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/* | ||
* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved. | ||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
* | ||
* This code is free software; you can redistribute it and/or modify it | ||
* under the terms of the GNU General Public License version 2 only, as | ||
* published by the Free Software Foundation. | ||
* | ||
* This code is distributed in the hope that it will be useful, but WITHOUT | ||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
* version 2 for more details (a copy is included in the LICENSE file that | ||
* accompanied this code). | ||
* | ||
* You should have received a copy of the GNU General Public License version | ||
* 2 along with this work; if not, write to the Free Software Foundation, | ||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
* | ||
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
* or visit www.oracle.com if you need additional information or have any | ||
* questions. | ||
*/ | ||
package xpath; | ||
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import org.testng.Assert; | ||
import org.testng.annotations.DataProvider; | ||
import org.testng.annotations.Test; | ||
import org.w3c.dom.Document; | ||
import org.w3c.dom.Node; | ||
import org.w3c.dom.NodeList; | ||
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import javax.xml.parsers.DocumentBuilderFactory; | ||
import javax.xml.xpath.XPath; | ||
import javax.xml.xpath.XPathConstants; | ||
import javax.xml.xpath.XPathExpressionException; | ||
import javax.xml.xpath.XPathFactory; | ||
import java.io.ByteArrayInputStream; | ||
import java.io.InputStream; | ||
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/* | ||
* @test | ||
* @bug 8289511 | ||
* @run testng/othervm xpath.XPathExpChildTest | ||
* @summary Tests for XPath child axis specifier. | ||
*/ | ||
public class XPathExpChildTest { | ||
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private static final String XML = | ||
"<store>\n" + | ||
" <book id=\"1\" lang=\"en\">\n" + | ||
" <title/>\n" + | ||
" <author id=\"1\"/>\n" + | ||
" <isbn>1234</isbn>\n" + | ||
" </book>\n" + | ||
" <book id=\"2\" lang=\"en\">\n" + | ||
" <title/>\n" + | ||
" <author id=\"2\"/>\n" + | ||
" <isbn>5678</isbn>\n" + | ||
" </book>\n" + | ||
"</store>"; | ||
private static final String AUTHOR_1 = "author_1"; | ||
private static final String AUTHOR_2 = "author_2"; | ||
private static final Document doc; | ||
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static { | ||
try { | ||
var builder = | ||
DocumentBuilderFactory.newInstance().newDocumentBuilder(); | ||
InputStream s = new ByteArrayInputStream(XML.getBytes()); | ||
doc = builder.parse(s); | ||
} catch (Exception e) { | ||
System.out.println("Exception while initializing XML document"); | ||
throw new RuntimeException(e.getMessage()); | ||
} | ||
} | ||
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/* | ||
* DataProvider: provides XPath expression and expected result | ||
*/ | ||
@DataProvider(name = "parameters") | ||
public Object[][] getXPathExpression() { | ||
return new Object[][]{ | ||
// abbreviated text | ||
{"/store/book/author", AUTHOR_1}, | ||
{"/child::store/child::book/child::author", AUTHOR_1}, | ||
{"/store/child::book/author", AUTHOR_1}, | ||
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// any nodes | ||
{"/store/book/child::*[2]", AUTHOR_1}, | ||
{"/store/child::*[child::author]/author", AUTHOR_1}, | ||
{"/store/child::*[child::author][2]/author", AUTHOR_2}, | ||
{"/store/child::node()/child::author", AUTHOR_1}, | ||
{"/store/child::node()[child::author]/author", AUTHOR_1}, | ||
{"/store/child::node()[child::author][2]/author", AUTHOR_2}, | ||
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// position | ||
{"/store/child::book[position()=1]/author", AUTHOR_1}, | ||
{"/store/child::book[last()]/author", AUTHOR_2}, | ||
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// descendant | ||
{"//book/child::*[2]", AUTHOR_1}, | ||
{"//child::*[child::author]/author", AUTHOR_1}, | ||
{"//child::*[child::author][2]/author", AUTHOR_2}, | ||
{"//child::node()/child::author", AUTHOR_1}, | ||
{"//child::node()[child::author]/author", AUTHOR_1}, | ||
{"//child::node()[child::author][2]/author", AUTHOR_2}, | ||
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// parent node | ||
{"//child::book/../child::book/child::author", AUTHOR_1}, | ||
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// dot reference | ||
{"//child::book/./child::author", AUTHOR_1}, | ||
{"//child::node()/./child::author", AUTHOR_1}, | ||
{"//././/./child::author", AUTHOR_1}, | ||
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// attributes | ||
{"/store/child::book[@id=1]/author", AUTHOR_1}, | ||
{"/store/child::book[attribute::id=1]/author", AUTHOR_1}, | ||
{"/store/child::book[@id]/author", AUTHOR_1}, | ||
{"/store/child::book[@id=1][@lang='en']/author", AUTHOR_1}, | ||
{"/store/child::book[@lang='en'][1]/author", AUTHOR_1}, | ||
{"/store/child::book[child::isbn='1234']/author", AUTHOR_1}, | ||
{"/store/child::book[@lang='en' and " + | ||
"child::isbn='1234']/author", AUTHOR_1}, | ||
{"/store/child::*[@lang='en'][2]/author", AUTHOR_2}, | ||
{"/store/child::node()[@id='1']/author", AUTHOR_1}, | ||
{"/store/child::node()[@lang='en'][2]/author", AUTHOR_2}, | ||
{"/store/child::*[child::author][child::title][@id='2']/author", | ||
AUTHOR_2}, | ||
{"/store/child::*[child::author or child::ssn][@id='2']/author", | ||
AUTHOR_2}, | ||
{"/store/child::*[child::*]/author", AUTHOR_1}, | ||
{"/store/child::*[attribute::*]/author", AUTHOR_1}, | ||
{"/store/*[*][*][*][*][*][*][*][*]/author", AUTHOR_1}, | ||
{"/store/*[@*][@*][@*][@*][@*][@*][@*][@*]/author", AUTHOR_1}, | ||
{"//author[@*]", AUTHOR_1}, | ||
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// text node | ||
{"/store/book[1]/isbn/child::text()/../../author", AUTHOR_1}, | ||
{"/store/book/isbn[child::text()='5678']/../author", AUTHOR_2}, | ||
{"/store/book/isbn[.='5678']/../author", AUTHOR_2}, | ||
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// count child nodes | ||
{"/store/book[count(./child::author)]/author", AUTHOR_1}, | ||
{"/store/book[count(child::author)]/author", AUTHOR_1}, | ||
{"/store/book[count(../child::book)]/author", AUTHOR_2}, | ||
}; | ||
} | ||
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/* | ||
* DataProvider: provides XPath expressions that return zero children | ||
*/ | ||
@DataProvider(name = "zeroChildrenExp") | ||
public Object[][] getZeroChildrenExp() { | ||
return new Object[][]{ | ||
{"/store/book[3]/author"}, | ||
{"/store/book/author/ssn"}, | ||
{"/store/child[book]/author"}, | ||
{"/store/child[@id='1']/book/author"}, | ||
{"/store/child::*[@category]/author"}, | ||
{"//author[*]/../author"}, | ||
{"//title[@*]/../author"}, | ||
{"/store/book[-1]/author"}, | ||
{"/store/child:book/author"}, | ||
{"//book[.='1']/author"}, | ||
}; | ||
} | ||
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/* | ||
* DataProvider: provides invalid XPath expression and expected exception | ||
* to be thrown | ||
*/ | ||
@DataProvider(name = "invalidExp") | ||
public Object[][] getInvalidExp() { | ||
return new Object[][]{ | ||
// XPathExpressionException | ||
{"/store/*[child::author] and [child::title]/author", | ||
XPathExpressionException.class}, | ||
{"//book[@id='en'] and book[@lang='en']/author", | ||
XPathExpressionException.class}, | ||
{"/store/book[child::count()]/author", | ||
XPathExpressionException.class}, | ||
{"//book[child::position()=1]", XPathExpressionException.class}, | ||
}; | ||
} | ||
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/** | ||
* Verifies XPath child axis specifier. | ||
* | ||
* @param exp XPath expression | ||
* @param expected expected result | ||
* @throws Exception | ||
*/ | ||
@Test(dataProvider = "parameters") | ||
void testXPathEvaluate(String exp, String expected) throws Exception { | ||
XPath xPath = XPathFactory.newInstance().newXPath(); | ||
NodeList nl = (NodeList) xPath.evaluate(exp, doc, | ||
XPathConstants.NODESET); | ||
Node node = xPath.evaluateExpression(exp, doc, Node.class); | ||
Assert.assertEquals(nl.item(0).getNodeName(), node.getNodeName()); | ||
Assert.assertEquals(nl.item(0).getNodeValue(), node.getNodeValue()); | ||
Assert.assertEquals(nl.item(0).getAttributes(), node.getAttributes()); | ||
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Assert.assertEquals(node.getNodeName() + "_" + | ||
node.getAttributes().item(0).getNodeValue(), | ||
expected); | ||
} | ||
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/** | ||
* Verifies no child nodes returned from the XPath expression. | ||
* | ||
* @param exp XPath expression | ||
* @throws Exception | ||
*/ | ||
@Test(dataProvider = "zeroChildrenExp") | ||
void testZeroChildrenExp(String exp) throws Exception { | ||
XPath xPath = XPathFactory.newInstance().newXPath(); | ||
Node node = xPath.evaluateExpression(exp, doc, Node.class); | ||
Assert.assertNull(node); | ||
} | ||
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/** | ||
* Verifies exception thrown for invalid expression. | ||
* | ||
* @param exp XPath expression | ||
* @param throwableClass expected exception | ||
* @throws Exception | ||
*/ | ||
@Test(dataProvider = "invalidExp") | ||
void testInvalidExp(String exp, Class throwableClass) throws Exception { | ||
XPath xPath = XPathFactory.newInstance().newXPath(); | ||
Assert.assertThrows(throwableClass, | ||
() -> ((NodeList) xPath.evaluate(exp, doc, | ||
XPathConstants.NODESET)).item(0).getNodeName()); | ||
} | ||
} |
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